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Infineon Technologies BTS426L1 — Power Management (PMIC / Gate Driver)
Infineon Technologies

BTS426L1 PROFET high-side switch, 50 mOhm, 5.8 A, obsolete

MPNBTS426L1
Obsolete

Infineon PROFET® BTS426L1, high-side power switch, 1 output, N-channel, 50 mOhm typ Rds(on), 5.8 A max, 5V to 34V load, TO-220-5 formed leads, -40°C to 150°C.

$3.8700Ref. price · indicative, final on quote
BTS426L1 datasheet
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
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Specifications

BTS426L1 Technical Specifications
ParameterValue
SeriesPROFET®
Input typeNon-Inverting
Output typeN-Channel
Switch typeGeneral Purpose
Mounting typeThrough Hole
Voltage - load5V ~ 34V
Voltage - supply (Vcc (Vdd))Not Required
Current - output5.8A
Number of outputs1
InterfaceOn/Off
Operating temperature-40°C ~ 150°C (TJ)
PackageTube
FeaturesAuto Restart, Status Flag
Rds on50mOhm
CaseTO-220-5 Formed Leads
Fault protectionCurrent Limiting (Fixed), Open Load Detect, Over Temperature, Over Voltage
Output configurationHigh Side
Ratio - Input:Output1:1

Product details

High-side switch with 50 mOhm on-resistance

The BTS426L1 is a single-channel high-side power switch from Infineon's PROFET® family, built with an N-channel MOSFET output and a typical on-resistance of 50 mOhm. It switches loads from 5 V to 34 V, delivering up to 5.8 A continuous, and requires no external Vcc supply — the gate drive is self-biased from the load voltage.

Fault protection and diagnostic feedback

Integrated fault protection covers current limiting (fixed), open-load detection, over-temperature shutdown, and over-voltage clamping. A status flag output signals fault conditions to the host controller. The auto-restart feature re-enables the switch after a thermal fault once the junction cools, which is useful for intermittent overloads in lamp or motor loads.

Through-hole package for high-current routing

Housed in a TO-220-5 package with formed leads (P-TO220-5-3), the BTS426L1 is a through-hole device suited for point-of-load switching where board-level heat sinking is needed. The large tab provides a low thermal resistance path to the PCB or an external heatsink — critical when running near the 5.8 A maximum at elevated ambient temperatures.

Infineon has classified the BTS426L1 as obsolete.

Frequently asked questions

What is the replacement for BTS426L1?

No official replacement or successor part number is recorded for the BTS426L1. A functionally similar PROFET® high-side switch with comparable Rds(on) and current rating should be evaluated for new designs — confirm pin-compatibility and protection feature set with the Infineon product selector.